Chapter 4 test cards Flashcards
When is an object in motion?
If it changes position relative to a reference point.
What is SI used for?
Describing the distance an object moves.
What is the formula for speed?
Speed = Distance/time
What are the units for time?
Minutes (m), hours (h), and seconds (s)
What is the formula for distance?
Distance = Speed x Time
What is the formula for time?
Time = Distance/Speed
What are the measurements for distance?
Miles, Meters, Millimeters, Kilometer, Centimeter
What is the formula for acceleration?
Acceleration = (Final speed - Initial speed) / Time
What do you need to know to calculate speed?
Distance traveled in a certain amount of time.
What are the two things you must know to find velocity?
Speed and direction
Which graph shows the motion of an object?
A line graph plotting distance versus time
What is the formula for slope?
Rise / run
What are the three forms of acceleration?
Increasing speed, decreasing speed, or changing direction
What are the two graphs to analyze the motion of an accelerating object?
Speed vs time and Distance vs time
How many centimeters are in a meter?
100
How many millimeters are in a meter?
1000
How many meters are in a kilometer?
1000
What does centi- mean?
One hundredth
What does milli- mean?
One thousandth
What does kilo- mean?
One thousand
What is velocity?
Speed in a given direction
What is the unit for acceleration?
m/s squared
The rate at which velocity changes is called…
Acceleration
